The Stretchiness of Stretchy Wraps

stretched-amountWe were invited to try out a new stretchy wrap recently and ended up having a conversation about the different degrees of ‘stretchiness’ that a stretchy wrap has. (Read more about the differences between stretchy wraps on the North East Sling Library site). Out of interest, we calculated the stretchiness of some of the main brands (by stretching a set width of material using the same force and measuring the maximum stretch)*. Here are our results:

Product 30cm stretched to:  Stretchiness Stretch Fabric constitution
Baby Bundler (the first  stretchy wrap brand!) 33cm 10% 1 way 100% cotton
Boba Wrap 43cm  43% 2 way 95% cotton, 5% spandex
By Kay Original 36cm 20% 1 way 100% cotton
By Kay Aqua Carrier 34cm 13.3% 1 way 100% polyester
Calin Bleu Fleece 36cm 20% 1 way 100% polyester
Cot to Tot 43cm 43% 2 way 95% cotton, 5% spandex
Designed 2U 35cm 17% 1 way 100% cotton
Ergo Wrap 41cm 36.6% 2 way 100% cotton
Hana Wrap 42cm 40% 2 way 68% bamboo, 28% cotton, 4% elastane
Hoppediz Wrap 36cm 20% 1 way 100% cotton
JPMBB (Je Porte Mon Bebe) 65cm 117% 2 way 95% cotton, 5% spandex
Joy & Joe 35cm 17% 1 way 100% cotton
Kari Me 43cm 43% 2 way 90%+ cotton
Moby Original 35cm 17% 1 way 100% cotton
Moby Mediumweight 35cm 17% 1 way 100% cotton
Victoria Slinglady 37cm 23% 1 way 100% cotton
Wrapsody Stretch Hybrid 35cm 17% 1 way 100% cotton
Wrapsody WrapDuo 38cm  27% 2 way 100% polyester

* We didn’t do this under lab conditions, but we did measure pretty carefully & try each stretch three times, taking the average measurement. For hemmed wraps, we measured away from the hem as we found that the hem reduced the stretch by 20 – 30%.

Any brands we’ve missed? Any thoughts or questions? Please comment below.

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